ClearView Retractable Screens are the only Patented Retractable Screen System. ClearView Screens utilize the technologyof roll-up blinds, updated and advanced to work vertically or horizontally. Our screens are manufactured with a durable, lightweight aluminum housing that protects the screen material when not in use. Within the housing, the ClearView Retractable Screen is anchored to an aluminum tube with a tension control device. ClearView patented Safe-Glide Speed Reducer insures our doors will retract fully without danger of trapped fingers or a slamming return.